An American family of film and stage actors, notably Lionel (1878–1954), his sister Ethel (1879–1959), and their brother John (1882–1942).
Definition of Barrymore in US English:
Barrymore
proper nounˈberəˌmôr
A US family of film and stage actors, notably Lionel (1878–1954), his sister Ethel (1879–1959), their brother John (1882–1942), and John's granddaughter Drew (1975–).